CN209548802U - A kind of sandrock filter air-water backwashing system - Google Patents
A kind of sandrock filter air-water backwashing system Download PDFInfo
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- CN209548802U CN209548802U CN201920097514.1U CN201920097514U CN209548802U CN 209548802 U CN209548802 U CN 209548802U CN 201920097514 U CN201920097514 U CN 201920097514U CN 209548802 U CN209548802 U CN 209548802U
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Abstract
The utility model discloses a kind of sandrock filter air-water backwashing systems, wherein automatic control device changes hydrodynamic(al) three-way valve overcurrent direction, it can be realized the free switching of filter process and backwash process, gas and water mixer is fixed on pipeline by connecting flange, gas-water mixing cavity is equipped with inside gas and water mixer, freely convertible water segregator, umbrella shape water fender, annular gas pipe and metal mesh are successively arranged inside the gas-water mixing cavity from the bottom to top, gas lock quick coupling is arranged in gas and water mixer, is connect by appendix with self-filler.The utility model is not on changing traditional sandrock filter structure basis, air-water backwashing function is fast implemented by simply increasing gas and water mixer and self-filler, backwash water consumption and power consumption are decreased obviously, backwash effect be improved significantly, so that it is guaranteed that the characteristics of irrigation system continues health operation, which is likewise supplied with simple structure and definite functions.
Description
Technical field
The utility model belongs to the filtering of irrigation and water conservancy industry and back-purge system technical field, and in particular to a kind of sandstone mistake
Filter air-water backwashing system.
Background technique
Sandrock filter is typically used in irrigation system stem engineering, main filtration original Organic substance in water, silt, solid
The impurity such as grain, to ensure that water quality meets requirement after filtering.Backwash is cleaning sandstone filter leaching material adsorption and hole
The impurity of gap retention, for water with the flowing of bottom-up reverse direction in sandrock filter, filtrate expands raising under flow action, filters
It collides and rubs between material particle, fall off and be cleaned with rear impurity.Sandrock filter tradition backwash mode is single
It is solely rinsed using clear water, and is a kind of relatively conventional backwash mode in practical projects using many years.Clear water individually cleaning
When filtrate, filtrate expansion height is generally in 15 ~ 20cm or so, and washing time general control was at 8 minutes or so.Sandrock filter is logical
It is often applied in combination, after sandrock filter head loss reaches preset value, automatic control system starts hydrodynamic(al) three-way valve, changes sand
Stone filter interior water (flow) direction, to complete filtrate cleaning inside sandrock filter.
Sandrock filter uses traditional clear water individually cleaning mode, can guarantee that filtrate cleans to a certain extent, still
Use process has the following problems, flow intensity is bigger than normal when backwash is easy to appear filterins media run-off, and intensity is less than normal to be unable to complete filter
Expect that internal impurity thoroughly removes, suitable backwashing water intensity of flow is significant for sandrock filter.Sandrock filter at present
It is mixed with water flow by air compressor machine by air input filter water collection chamber using the research of air-water backwashing mainly in laboratory
Enter in filter material chamber after conjunction through filter cap, under gas and water flow collective effect, the enhancing of filtrate collision friction probability, internal impurity
It is removed.There are following advantages for air-water backwashing, can reduce flow intensity, water consumption obtains sharp fall, filtrate stream
It loses phenomenon to be controlled, the cleannes of filtrate are substantially better than the independent rinse mode of traditional clear water after backwash.
This patent utility model people publishes thesis " both surface filtration and air-water backwashing experimental study of slight irrigation sand filtering material ", grinds
It is very fast to study carefully discovery air-water backwashing sewerage turbidity reduction rate, filtrate cleaning can be completed within a short period of time.Identical
It under the conditions of flow intensity, is not cleaned thoroughly inside filtrate after tradition backwash, increasing back washing strength still has large amount of sewage
Discharge.Filtrate cleannes after air-water backwashing are higher, new round filter cycle be improved significantly, reduce backwash frequency
Rate.The mode of air-water backwashing aerating at present is more extensive, it is often necessary to be equipped with air compressor machine, uniform air distribution is poor, and backwash is deposited
At dead angle, this patent is in view of the above problems, design a kind of sandrock filter air-water backwashing system, it is intended to improve gas and filter
Distributing homogeneity inside device realizes existing sandrock filter full-automatic gas water backwashing by low cost investment.
Patent if Authorization Notice No. is CN207203571U discloses a kind of micro-irrigation sandrock with aerating backwashing function
Filter, the patent mainly increase expanded rubber diaphragm by supporting in sandrock filter on supporting plate, air compressor machine inputs gas
It inside expanded rubber diaphragm, is entered inside sandrock filter by gas outlet, realizes air-water backwashing.But the patent needs
Larger change is done to existing sandrock filter support blade structure, it is equal to influence gas distribution that expanded rubber diaphragm stomata is easy blocking
Even property, and air compressor machine space occupied is big and energy consumption is high, thus there is certain difficulty in actual application in the patent.
Summary of the invention
There is provided a kind of sandrock filter gas being simple in structure and reasonable in design for the technical issues of the utility model solves
Water backwashing system promotes gas and water for effectively solving the problems, such as that current sandrock filter air-water backwashing process exists
It is sufficiently mixed, realizes that backwash without dead angle, improves backwash effect, sustainedly and stably provide safe use for irrigation system
Water.
The utility model adopts the following technical scheme that solve above-mentioned technical problem, a kind of sandrock filter air-water backwashing
System, it is characterised in that including combined type sandrock filter, gas and water mixer, self-filler and automatic control device,
Wherein the water inlet of combined type sandrock filter is in parallel with water inlet pipe and sewage pipe respectively by hydrodynamic(al) three-way valve, combined type sandstone
The water outlet of filter is in parallel with outlet pipe and appendix respectively by gas and water mixer, includes supporting bracket in sandrock filter
Plate, the filter cap being fixed on support supporting plate and the filtrate being filled in filter cap；
Gas and water mixer is fixed on pipeline by flange, and gas-water mixing cavity, the gas are equipped with inside gas and water mixer
Freely convertible water segregator, umbrella shape water fender, annular gas pipe and metal mesh are successively arranged inside water mixing chamber from the bottom to top, wherein
Water segregator surface layout has hole for water spraying, and Open Side Down and is set to the surface opposite with water segregator hole for water spraying for umbrella shape water fender,
Metal mesh and annular gas pipe are individually fixed on the inner sidewall of gas-water mixing cavity, and annular gas pipe sealing runs through gas-water mixing cavity side wall
And it is connect by solenoid valve and gas lock quick coupling with appendix；
Micro air pump, controller, gas tank and pressure sensor are equipped with inside self-filler, controller is passed according to pressure
Sensor monitor value, starting micro air pump work, realization device automate gas replenishment process；
Automatic control device is arranged in parallel hydrodynamic(al) three-way valve for control and is arranged in parallel solenoid valve in gas and water mixer
Switching, realize the filtering of combined type sandrock filter and the free switching of backwash process.
Further preferably, the water segregator is round water segregator that 60 ° of sectors divide water unit to form, the sector by angle
Water unit is divided to be fixed on the inner sidewall of gas-water mixing cavity by angle spring and can be realized fan under the action of angle spring
Shape divides freely overturning for water unit, and sector divides water unit to be turned into straight down in filter process, fan-shaped point in backwash process
Water unit overturn horizontally, water segregator surface layout have hole for water spraying for by reduce area of passage raising water velocity.
Further preferably, the annular gas pipe disposed inboard has angled downward from horizontal and is directed at water segregator and umbrella shape water fender
Forefoot area stomata.
Further preferably, the umbrella shape water fender is opposite with water segregator hole for water spraying direction under horizontality, the umbrella shape water blocking
The angle of plate is 45 ° obliquely, for further increasing water turbulence degree, convenient for being sufficiently mixed with gas.
Further preferably, the metal mesh uses 301 stainless steel metal sintered meshworks, and pore size control is in 5mm.
Further preferably, the self-filler is miniature using low energy consumption by pressure sensor monitoring gas tank pressure
Air pump sustainedly and stably provides gas for gas tank.
The operation method of sandrock filter air-water backwashing system described in the utility model, it is characterised in that detailed process
Are as follows: raw water to be filtered is entered inside sandrock filter by water inlet pipe, and impurities in water is trapped in filtrate hole or is adsorbed on filter
Expect surface, crosses water after filter by filter cap and enter water collection chamber, subsequently enter field network；With inside sandrock filter, impurity is continuous
Increase, when head loss reaches preset value, automatic control device control starting backwash process completes sandrock filter one by one
Cleaning, hydrodynamic(al) three-way valve is instructed according to automatic control device changes internal water flow passages, the filtering of other sandrock filters
Water opposite direction enters inside sandrock filter to be cleaned afterwards, and filtrate expands under flow action, and impurity is collided with filtrate
Friction falls off, and then passes through sewage draining exit discharge, by the way that gas and water mixer is arranged in sandrock filter water outlet, in the work of gas
It is expanded with lower realization filtrate, reinforces the expandable frictional between filtrate, improved backwash efficiency and guarantee filtering effluent quality, use is low
Energy consumption micro air pump is gas tank inflation, and the gas replenishment process of gas tank is completed during filtering, and automatic control device starts gas when backwash
Water mixing device side solenoid valve, gas and water are sufficiently mixed by gas and water mixer, subsequently enter inside sandrock filter
Complete backwash process.
Further preferably, the gas and water mixer connect using flange method with pipeline, and automatic control fills when backwash
It sets and solenoid valve is opened by signal wire output order, self-filler internal gas enters mixing wastewater with air by appendix and fills
It sets, gas is sprayed by the stomata on annular gas pipe, and stomata aperture tilts down, and backwash water flow is mixed into air water from bottom to top
It attaches together and sets, water segregator is in horizontality under the effect of angle spring, and water flow is sprayed by the hole for water spraying on water segregator, due to mistake
Water section reduces, and flow rate of water flow improves rapidly, and flow-shape is jet stream from pipe rheology, and hole for water spraying is evenly distributed on four concentric circles
On, water flow is collided after hole for water spraying with surface umbrella shape water fender, and umbrella shape water fender realizes injection water turbulent fluctuation state, gas
Enter region between umbrella shape water fender and water segregator, gas and water by stomata and realizes abundant mix under complicated flow turbulence
It closes, water flow carries gas and passes through metal mesh, further promotes and stablize gas distribution consistency degree in water, water segregator when system filters
Vertically downward direction is under water flow gravity, water segregator is under angle spring and upward water flow effect when backwash
In horizontal direction, due to hole for water spraying negligible amounts on water segregator, flow-shape becomes jet stream from pipe stream, therefore water segregator will receive water
Stream thrust is to realize that its freely spins upside down.
The utility model is had the advantages that compared with prior art by the way that gas and water mixer is arranged, and improves gas
The mixing uniformity of body and water, filtrate collision friction enhances under gas effect, and the impurity on filtrate hole and surface is easier
It falls off, promotes the cleannes of filtrate after backwash, extended filter cycle, backwash water consumption and power consumption is decreased obviously,
It plays an important role for the health operation of maintenance irrigation system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model filter process；
Fig. 2 is the structural schematic diagram of the utility model backwash process；
Fig. 3 is the structural schematic diagram of gas and water mixer in the utility model；
Fig. 4 is the structural schematic diagram of annular gas pipe；
Fig. 5 is the structural schematic diagram of water segregator；
Fig. 6 is the structural schematic diagram of water segregator Yu umbrella shape water fender；
Fig. 7 is the structural schematic diagram of metal mesh.
In figure: 1- water inlet pipe, 2- hydrodynamic(al) three-way valve, 3- sandrock filter, 4- automatic control device, 5- filtrate, 6- filter cap,
7- water collection chamber, 8- gas and water mixer, 801- flange, 802- screw hole, 803- gas-water mixing cavity, 804- metal mesh, 805- angle
Spring, 806- water segregator, 807- annular gas pipe, 808- hole for water spraying, 809- stomata, 810- umbrella shape water fender, 9- solenoid valve, 10-
Outlet pipe, 11- signal wire, 12- gas lock quick coupling, 13- appendix, 14- self-filler, 15- controller, 16- are miniature
Air pump, 17- pressure sensor, 18- gas tank, 19- sewage pipe.
Specific embodiment
The technical solution of the utility model, a kind of sandrock filter air-water backwashing system, packet is described in detail in conjunction with attached drawing
Combined type sandrock filter 3, gas and water mixer 8, self-filler 14 and automatic control device 4 are included, wherein combined type sand
The water inlet of stone filter 3 is in parallel with water inlet pipe 1 and sewage pipe 19 respectively by hydrodynamic(al) three-way valve 2, combined type sandrock filter 3
Water outlet it is in parallel with outlet pipe 10 and appendix 13 respectively by gas and water mixer 8, including supporting bracket in sandrock filter 3
Plate, the filter cap 6 being fixed on support supporting plate and the filtrate 5 being filled in filter cap 6, support supporting plate lower part are water collection chamber 7；Air water is mixed
It attaches together and sets 8 and be fixed on pipeline by flange 801 and connecting screw hole 802, gas-water mixing cavity is equipped with inside gas and water mixer 8
803, freely convertible water segregator 806, umbrella shape water fender 810, annular are successively arranged inside the gas-water mixing cavity 803 from the bottom to top
Tracheae 807 and metal mesh 804, wherein 806 surface layout hole for water spraying 808 of water segregator, Open Side Down and is arranged for umbrella shape water fender 810
In the surface opposite with 806 hole for water spraying 808 of water segregator, metal mesh 804 and annular gas pipe 807 are individually fixed in gas-water mixing cavity
On 803 inner sidewall, the sealing of annular gas pipe 807 is through 803 side wall of gas-water mixing cavity and passes through solenoid valve 9 and gas lock quick coupling
12 connect with appendix 13；Micro air pump 16, controller 15, gas tank 18 and pressure sensor are equipped with inside self-filler 14
17, controller 15 starts micro air pump 16 and works, realization device automates gas replenishment process according to 17 monitor value of pressure sensor；
Automatic control device 4 is controlled in the hydrodynamic(al) three-way valve 2 being arranged in parallel and the gas and water mixer being arranged in parallel 8 by signal wire 11
The free switching of combined type sandrock filter 3 filtering and backwash process is realized in the switching of solenoid valve 9.
Water segregator 806 described in the utility model is by the round water segregator that angle is that 60 ° of sectors divide water unit to form, the fan
Shape divides water unit to be fixed on the inner sidewall of gas-water mixing cavity 803 and under the action of angle spring 805 by angle spring 805
Can be realized sector divides water unit freely to overturn, and sector divides water unit to be turned into straight down in filter process, backwash process
Middle sector divides water unit overturning horizontally, and 806 surface layout hole for water spraying 808 of water segregator is used to mention by reducing area of passage
High water velocity.807 disposed inboard of annular gas pipe have angled downward from horizontal and alignment water segregator 806 and umbrella shape water fender it
The stomata 809 of forefoot area.The umbrella shape water fender 810 is opposite with water segregator 806 hole for water spraying, 808 directions under horizontality, the umbrella
The angle of shape water fender is 45 ° obliquely, for further increasing water turbulence degree, convenient for being sufficiently mixed with gas.It is described
Metal mesh 804 uses 301 stainless steel metal sintered meshworks, and pore size control is in 5mm.The self-filler 14 passes through pressure sensing
Device 17 monitors 18 pressure of gas tank, and low energy consumption micro air pump 16 is used sustainedly and stably to provide gas for gas tank 18.
The operation method of sandrock filter air-water backwashing system described in the utility model, carrying out practically process are as follows: the
One stage be sandrock filter 3 filter, raw water to be filtered after water pump pressurizes enter water inlet pipe 1, by hydrodynamic(al) three-way valve 2 into
Enter inside sandrock filter 3, impurity is trapped within 5 hole of filtrate or is adsorbed on its surface, crosses water after filter through filter cap 6 and enters collection
Water cavity 7 enters field network by connecting line, is finally transported to field crop root region soil, detailed process such as Fig. 1 institute
Show.Second stage is the backwash of sandrock filter 3, as 5 impurity trapped of filtrate is increasing, 3 head of sandrock filter damage
It loses and constantly increases, system starts to backwash after reaching preset value, and the simple water backwashing mode detailed process of tradition is, by program
Each sandrock filter 3 is successively backwashed, hydrodynamic(al) three-way valve 2 is started by automatic control device 4, adjusts its internal mistake
Circulation road, backwash process is as shown in Fig. 2, water section enters field network after filtering, partially into the sandstone for needing to backwash
Filter 3, water flow pass through connecting line first and enter water collection chamber 7, enter inside sandrock filter 3 through filter cap 6, in flow action
Lower filtrate 5 expands, and the impurity of the absorption of filtrate 5 and retention starts shedding off, and the sewerage for carrying impurity passes through hydrodynamic(al) three-way valve 2
It is discharged by sewage pipe 19.And gas and water mixer 8, aerating backwash process water (flow) direction and the simple water of tradition is arranged in this system
Backwash identical, difference is source and the gas distribution mode of gas, is embodied in self-filler 14 and passes through pressure sensing
Device 17 monitors 18 internal pressure of gas tank, and it is aerating that controller 15, which starts micro air pump 16 according to the pressure limit value of setting and works,
Backwash provides regime flow gas.Gas and water mixer 8 is connect using 801 mode of flange with pipeline, and when backwash is controlled automatically
Device 4 processed opens solenoid valve 9 by output order, and 14 internal gas of self-filler enters mixing wastewater with air by appendix 13
Device 8, gas are sprayed by stomata 809 on annular gas pipe 807, and 809 blowing angle of stomata and horizontal sextant angle are 45 °, backwash
Water flow enters gas and water mixer 8 from bottom to top, and water segregator 806 is in horizontality under the effect of angle spring 805, and water flow is logical
The hole for water spraying 808 on water segregator 806 is crossed, since the cross-section of river reduces, flow rate of water flow is improved rapidly, and flow-shape is from pipe rheology
Jet stream, hole for water spraying 808 are evenly distributed on four concentric circles, water flow after hole for water spraying 808 with surface umbrella shape water fender 810
Collision, umbrella shape water fender 810 can preferably realize injection water turbulent fluctuation state using beveled structure, and gas passes through stomata 809
Into between umbrella shape water fender 810 and water segregator 806, gas and water are realized under complicated flow turbulence and are sufficiently mixed, water flow
It carries gas and passes through metal mesh 804, further promote and stablize gas distribution consistency degree in water；Water segregator 806 when system filters
Vertically downward direction is under water flow gravity, water segregator 806 is made in angle spring 805 and upward water flow when backwash
It is horizontally oriented under, due to 808 negligible amounts of hole for water spraying on water segregator 806, flow-shape becomes jet stream from pipe stream, therefore divides
Hydrophone 806 will receive hydro-flow thrust to realize that its freely spins upside down.
The basic principle of the utility model, main feature and advantage has been shown and described above, it is practical new not departing from this
Under the premise of type spirit and scope, there are also various changes and modifications, these changes and improvements both fall within requirement and protect the utility model
The scope of the utility model of shield.
Claims (6)
1. a kind of sandrock filter air-water backwashing system, it is characterised in that filled including combined type sandrock filter, mixing wastewater with air
It sets, self-filler and automatic control device, wherein the water inlet of combined type sandrock filter is distinguished by hydrodynamic(al) three-way valve
It is in parallel with water inlet pipe and sewage pipe, the water outlet of combined type sandrock filter by pneumatic mixing arrangement respectively with outlet pipe and defeated
Tracheae is in parallel, includes support supporting plate, the filter cap being fixed on support supporting plate and the filtrate being filled in filter cap in sandrock filter；
Gas and water mixer is fixed on pipeline by flange, and gas-water mixing cavity is equipped with inside gas and water mixer, and the air water is mixed
It closes intracavitary portion and is successively arranged freely convertible water segregator, umbrella shape water fender, annular gas pipe and metal mesh from the bottom to top, wherein dividing water
Device surface layout has hole for water spraying, and Open Side Down and is set to the surface opposite with water segregator hole for water spraying, metal for umbrella shape water fender
Net and annular gas pipe are individually fixed on the inner sidewall of gas-water mixing cavity, and annular gas pipe sealing is through gas-water mixing cavity side wall and leads to
It crosses solenoid valve and gas lock quick coupling is connect with appendix；
Micro air pump, controller, gas tank and pressure sensor are equipped with inside self-filler, controller is according to pressure sensor
Monitor value, starting micro air pump work, realization device automate gas replenishment process；
Automatic control device, which is used to control, to be arranged in parallel hydrodynamic(al) three-way valve and is arranged in parallel cutting for solenoid valve in gas and water mixer
It changes, realizes the free switching of combined type sandrock filter filtering and backwash process.
2. sandrock filter air-water backwashing system according to claim 1, it is characterised in that: the water segregator is by pressing from both sides
Angle is the round water segregator that 60 ° of sectors divide water unit to form, which divides water unit to be fixed on mixing wastewater with air by angle spring
It can be realized sector on the inner sidewall of chamber and under the action of angle spring and divide freely overturning for water unit, it is fan-shaped in filter process
Water unit is divided to be turned into straight down, sector divides water unit overturning horizontally in backwash process, water segregator surface layout
Have hole for water spraying for by reduce area of passage raising water velocity.
3. sandrock filter air-water backwashing system according to claim 1, it is characterised in that: on the inside of the annular gas pipe
It is disposed with angled downward from horizontal and is directed at the stomata of the forefoot area of water segregator and umbrella shape water fender.
4. sandrock filter air-water backwashing system according to claim 1, it is characterised in that: the umbrella shape water fender with
Water segregator hole for water spraying direction is opposite under horizontality, and the angle of the umbrella shape water fender is 45 ° obliquely, for further increasing water
Turbulence level is flowed, convenient for being sufficiently mixed with gas.
5. sandrock filter air-water backwashing system according to claim 1, it is characterised in that: the metal mesh uses
301 stainless steel metal sintered meshworks, pore size control is in 5mm.
6. sandrock filter air-water backwashing system according to claim 1, it is characterised in that: the self-filler
By pressure sensor monitoring gas tank pressure, low energy consumption micro air pump is used sustainedly and stably to provide gas for gas tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920097514.1U CN209548802U (en) | 2019-01-19 | 2019-01-19 | A kind of sandrock filter air-water backwashing system |
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| CN201920097514.1U CN209548802U (en) | 2019-01-19 | 2019-01-19 | A kind of sandrock filter air-water backwashing system |
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| CN209548802U true CN209548802U (en) | 2019-10-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692508A (en) * | 2019-01-19 | 2019-04-30 | 中国农业科学院农田灌溉研究所 | A kind of sandrock filter air-water backwashing system |
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2019
- 2019-01-19 CN CN201920097514.1U patent/CN209548802U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692508A (en) * | 2019-01-19 | 2019-04-30 | 中国农业科学院农田灌溉研究所 | A kind of sandrock filter air-water backwashing system |
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